Running repeated brushing cycles on the Series 4, the batteries drained after 1hr 38mins. Brushing twice a day for two minutes, you’re looking at roughly three-and-a-half weeks before you need a recharge. That’s not bad at all, although we’ve seen some Sonic brushes that can keep running for well over a month. Forget about fast charging, though. With the charger supplied, it’s best to charge the toothbrush overnight. Oral-B iO Series 4 review: Should I buy it? Don’t fret if it takes some getting used to and you see the red light more often than you like. The motor will slow the bristle movements to further protect the teeth until such time the pressure is relieved.

Make sure you are not charging the toothbrush on a metal surface. The metal can interfere with the charging process. FOR HEALTHIER GUMS IN JUST 1 WEEK remove 100% more plaque and even 2.5X in between teeth* with ORAL-B MOST ADVANCED TECHNOLOGY *vs a manual brush.

Pharmacy product

I do prefer the sensation you get with the iO4 compared to the likes of the Genius X for example. But, it isn’t worth switching to this brush for the different brushing sensation alone, it’s just a positive perk. The brush head is bigger than what you might be used to

Statistics would suggest that the vast majority of people fail to brush their teeth for anywhere near enough time to maximise plaque removal.A selling point of the iO range is the cleaner and more minimal handle design. It has what many, myself included, believe to be a premium vibe. I’ve not experienced this with the iO Series 3, which as far as I am aware has the same rechargeable Lithium-Ion battery sealed inside the handle.